Porting, validation and verification of Dolby Pro Logic II decoder

Abstract

As Digital Signal Processors and digital signal processing technology are in increasing process, optimization of previously developed code for Digital Signal Processors has become more and more important. This paper presents an approach for porting Dolby Pro Logic II audio decoder, from the reference platform to the targeted DSP architecture. The overall system is firstly analyzed and then ported to the DSP platform. The system features are validated and verified using software simulations and audio system measurements in real-time conditions. The application of targeted DSP system is in audio processing for digital TV receivers, mobile phones, headsets, etc. The results have shown that execution time is decreased in the final system, and that higher sampling rates are enabled for better performances.

An Ontology for Spatio-Temporal Media Management and an Interactive Application

“…Although many standards and specifications [1][2][3][4][5] exist for digital media, video and audio media representations are highly restricted because they are created for playback on widely used playback devices. The basic playback style of video is a single rectangular screen, and most of the audio content is stereo audio or channel-based audio with fewer than ten channels [6]. Although, there are various factors in the representation of digital media, such as video resolution, pixel representation, refresh rate, audio code length, sampling rate, and the number of channels, this representation is only a variation of the basic style of the rectangular screen plus channel-based audio.…”